化脓性关节炎关节腔灌洗引流液转清，经培养无细菌生长后可停止灌洗，但引流管仍吸引数天。()
参考答案：对
— Will you join us in the game?
— Thank you, ____.[ ]
A. but why not?
B. but I'd rather not.
C. and I won't.
D. and I'll join.
下列家庭厨房中发生的变化，属于物理变化的是 [ ]
A.食物腐败
B.水沸腾
C.天然气燃烧
D.牛奶变酸
